Furnaces



Sept. 4, 1923. 1,466,775

' w. H. WHARTON REVERSING VALVE FOR QPEN HEARTH AND OTHER TYPES OF REGENERATIVE FURNACES Filed Jan. 14. 1921 Jmrcn r Patented Sept. 4, 1923.

UNITED STATES 1,466,775 PATENT OFFICE.

WILLIAM HENRY VJHARTON, OF TORONTO, CNTARIO, CANADA.

7 BEVERSINGr VALVE FOR OPEN-HEABTH AND TYPES OF REGENERATIVE I FURNACES.

Application filed January 14, 1921. Serial no. 437,282.

theobject oi the inventionis to devise a reversing valve. system in which a positively regulated amount otair can be supplied to the furnace under suitable pressure. I

' A turthe ohject'is to devise means for changing the direction of the air supplied from one regenerative chamber to the other with a simultaneous change in direction of eXitoi? the hot waste gases.

.i. still further objectis to provide means for raising the temperatureot the air fed into the respective regenerative,chambers, through the medium of the hot waste gases,

while suchair the same time acts as a cooling medium for the valve through which i ll. passes.

Another object is to, devise means for withdrawing the respective valves from contact with the hot waste gases which are pass-c from the furnaceto the stack.

y invention consists cite. reversing valve em cons-itructed and arranged all as herei :er more particularly described and illustrated in the accompanying drawing 171 which:

l is'a' mechanism one-halt otthe plan being shown in horizontal section. the whole plan being unetricul about thecentrcline. I i Fig l is an ele ation of same witha portion 0'! the air showing the ins of the air chamber and the air regulating mechanism contained therein.

3 is an end elevation/0t one of the valves with section vthrough the an. ch :1 mher. i

q l is an clevational view of one of the valveseats, takenfjrom the stack side, and

planet the complete valve ciamber cover removed,

5 is a vertical longitudinal section Like characters of lBTfQIGl'lCB indicate corresponding parts in thesdiiferent views.

A is the reversing valve chamber coniposed of any suitable material and preferably bricklined as to walls and root. B and C are fines leading in opposite directions from the chamber A to the respective regenerative members (not shown) situated one ate-sch end of the furnace. D is a flue lead ing from the chamber A to the chimney stack. I

E is a vertical partition extending torwardly from the rear wall of the chamber A and separating the tines B and C, said tition E at its forward end connecting with the transversely extending aligned partitions lb" and G. While the partition E may be composed of a combination of brick work and steelor cast iron plates, the partitions ii and G are hollow and are adapted to be filled with water by being connected to the water circulation system hereinafter clescribed.

Each of the partitions F and G has valveseat orifice 9 extending therethro'ugh in which a centrally positioned hollow boss J is located, supported by the radially e2;- tendin bowed tubular arms H communion? ing with the respective partitions and (it. Thus the water in the partitions is permitted to fill the arms H and the hollow boss 3". M is a water discharge pipe from each hollow partition F and G.

d I will now describe the construction of the valves which are. used in connection with the valve seat orifices 9 in the partitions F and actuating them are identical in construction the description of one will sufiice for both.

Each boss J supports the forward end of the hollow shaft K which communicates with. the interior of the boss. said shaft 0011-.

The valve is As both valves and the means tor-v screwed on the piston rod V and rearwardly from each valve N is a tube 0 which is slidahly supported at its rear end on the webs ll of the air chamber 1. The tube 1 l is connected to the forward end of the hollow piston rod Q which extends around the shaft TV and has its rear end mounted in the piston rcciprocable in the cylinder W. Connected air regulating cones S and T positioned in spaced relation to each other are slidahly mounted in the air D into which air is pumped under chamber pressure, the 'lorward cone d having a central orifice 12 therethrough and the cone '1 having a rearwardly extending skirt 13, said cones heiuc of such diameteras to perinit the tube to slide t-hereover and to engage the shoulder l on such skirt. Steam 1 compressed air is introduced into the respective ends oi the cylinder -3 througilr .ither of the spaced apart pipes l or :2 which are connected thereto iiniernieeiare. y of the length 0'? such cylinders. each pair of pipes 1 and 2 leading; prt .iabl to a threeway (not shown). The pipes l and 2 have 1 pipes and t respectively. with rerding val. 5 a d (3 therein. and ed to the rear and forward ends cylinder V.

i Below each cylinder s a small cylinder X coimriulicatiinitherewith through the bypass it. U is a piston reciprocable in the small c' V is a torwardly extendconnector each lVi udcr X. inn threaded piston rod connected to the piston U at its rear end and at its forward en to the skirt of the cone Y is a wheel capable of to actas longitudinal adjustment thereon a. .p to limit the movement ot the piston rod.

K is a pipe connected to the end of liosses J. arins G. from whence it is dischar ed throuo h the discharge pipes M.

The operation of my reversing valve is as follows i lhiferrinp; to Fig. 1 it will be seen that the lett hand valve N is in the seated position and that air under pressure is beingintroduced. trorn the corresponding air chamber 11 through and in front of the cone S. through the tube 0 and valveh out of the annular port 105 into theiilue and thence nto its connected regenerative chamber. Such is heated by the hot waste gases from the furnace on the stack side of the partition F striking" the front taco of the closed valve N, such valve face being receive correspondingly cooled by such air as it is deflected from the tube 0 around such surface and out of the port 10.

The other valve l is in the open position wherein it is withdra vn into the recess 15 in the rear wall of the valve chamber A, thus being out o1v the path of th hot waste gases being discharged from the furnace through the line C, valve seat orifice 9. the partition G, into the forward porjon of the Valve chamber A and finally out of the line D into the stack.

llow assuming that conditions in the furnace require the reversing of the valves, I will describe the operation of the mechanism for closing the open valve N and opening its fellow. Steam or air un er pressure is admitted to opposite ends of the two cylinders W, at the rear of the right cylinder and at the forward end of the left hand one, thus c i the ri ht hand piston and atcependEng on the adjustment of the cones S and T. while the le t hand piston R and piston rod Q with the attached valve N are (8i rear .'-.'ardly under the influence of the steam or air pressure introduced into the torwart end the left hand cylinder lV, until the tube 9 covers the inlet from the air charnhcr P, its rear end engaging the shoulder on the skirt 13 of the cone T, thus cutting of? the air supply simultaneously w th the unseating of the left hand valve When this is done the hot waste gases from the furnace are now discharged through the tlue through the valve seat orifice 9 in the partition F into the forward portion oi"? the valve chamber A and thence to the s eel; through the flue D.

A 'tting air or steam pressure to the torceu until the opening of such pipe into the cylinder covered by the piston, when it will be exhausted through the branch pipe l, through the retarding valve 6. which inipcdes its flow and causes such fluid in the forward end or" the cylinder W to cushion the piston R as it completes its forward other type r stroke 7 similarlywhenthe working fluid is admitted through the pipe 1 to the for on its rearward stroke.

As the piston R moves forwardly from its rearmost position it uncovers the opening of the by-pass 7 in the cylinder W, and thus the fluid passing through the bypass 7 into the small cylinder X- forces the piston U forwardly. The piston rod V pushes forwardly the two cones S and T to the re quired position as determined by the setting of the adjustment wheel Y. The wheel Y acts as a stop for thepiston rod V and limits the forward movement'of the cones S and T depending on its adjustment, thus varying the distance of the cone'S from the rear; end of the tube 0, consequently regulating-the volume of air admitted from the air chamber P to the tubeO and thence to the chamber B or C depending upon which valve is operating. It is obvious that if, by adjusting the wheel Y so that the piston V is allowed its maximum throw the cone S will be permitted to move forwardly until it practically closes the aperture between it and the interior of. the tube 0 when the air under pressure will then only be admitted through the interior orince in the cone.

Consequently it will be apparent that as either valve N is moved forwardly onto its seat wherein the't'ube O uncovers the inlet 'lrom the air chamber l the cones S and T will he moved forwardly-to regulate the admission 0t air 'to the tube-0. The reerse of these different operations is meanwhile taking place in the other valve mechanism.

The purpose of regulating the supplyoi is to make for more perfect combustion of the combustible gases, and also to compensate forvariations inatmospheric pressure or the pressure of the combustible gases; as well to enable the operatorto maintain oxidizing or neutral the :hirnar-e as required.

lclaim: H 1. In rever i g valves for open hearth and i'erative "furnaces, the coml'iination with a valve chamberdivided into three com artments, flees communicating with the re. iective compartments, vertically positioned iratencooled hollow partitions between two compartments and the third comparti'nent havin g 'openi' n gs. therethrough constituting vertically pos tioned watercooled valve seats, and: valve bodies alternately closing the openings in there spective partitions. I Q

reversing" valves for open hearth and other type regenerative furnaces, the

combination with a valve chamber divided conditions in.

into three compartments flues communicatingwith the respective compartments, vertically positioned water-cooled hollow parti tions between two compartments and the third compartment having openings therethrough constituting vertically positioned water-cooled valve seats. and air cooled valve bodies alternately closing the openings in the respective partitions.

3. In reversing valves for open hearth and other type regenerative furnaces, the combination with a valve chamber divided into three compartments, flues communicating with the respective compartments, watercooled partitions between two compartments and the third compartment having openings therethrough constituting watercooled valve seats, means for introduci air alternately to the lines through the two compartments of the valve chamber through the valve bodies upon the latter being in their seated position, said means cutting off the admission of the air upon the valve bodies being moved out of engagement with their seats.

4. In reversing valves for open hearth and other type regenerative furnaces, the combination with a valve chamber divided into three compartments, fines communicating with the respective compartmeuts water-cooled partitions between two compartments and the third compartment having openings therethrough constituting water-cooled valve seats, means for introducing air alternately to the fines in the two portions of the val e chamber through the valve bodies upon the latter being in their seated position, means regulating the supply of air admitted to the lines through the valve bodies, and means for cutting off the admission of the air upon the valve bodies being moved out of engagement with their seats.

5. In reversing valves for open hearth and other type regenerative furnaces,v the combination with the respective regenerative chambers of the fur; e, and the stack. of a valve chamber, partitions dividing the valve chamber into three distinct compartments, a flue connecting one compartment with the stack, flues connecting the other and open valve into the compartment.

6, In reversing valve other type regencrati bination of ti; mambecs oi the 1 and the stack, of a valve chamber, p witiens dividingthe valve chamber into hue, distinct compartments, 2 mniparti,ient with the sting the other two comr spectivc rccje" :rative h be ween is recd compartconnected com I therothrough or closing rnately admitgenerative chamber and thence stack flue COIlTiQCt-Qd 'for open hearth and 1Cf-. the comregenerative inents corresponding rethe valve in the c chamber being 116 lQSPGColVG COii val es.

V In

revert: iv. for open hearth and other q regenerative ii "TiZlCGS, the

cfiibination of the respecti e regenerative chambers of the turn a d the k, of

a valve chamber, 2 i divh the valve chan'iber into three distinct compare one compartment ions between the regenerative connected compartnjionts and connected compartment being through consciuting water-cooled valve seats, valves for closing said openings, means for alt'crnatel admitting to one of the regenerative chamber ilue connected compartments and thence through the due to the corresn riding *nerative chamber upon the va in the compartment being seated, the waste ases tin nu the other regenerative chamber being expelled through the other compartment and open valve into the stack tine Conne d compartment, means for rcguiatin the suppiv of air to the respective con :rtinents through the valves.

8. ln valves {or open hearth and other rc encrative type furnaces, the combinat n v. the spective regenerative chambers of the furnace, and the stack, of a valve chamber, partitions dividing the valve chamber into three dis*'nct compartments, line c 'miecting one con'ipartment with the stack, lines connecting t ie other two conipartinents with the respective regenerative chen'ibers, the partitions betwecnthe regenerative chamber line connected compartments and the staci; line connected compartment an l the waste gases" and having openings thereother type regenerative furnaces, the combi nation with the valve chamber regenerative chambers, stack and fines from the regenerative chambers to the valve chamber, of valves for providing communication between the stack and the alternate regenerative chainber communicating lines, and means for admitting air to each. of the fiuesupon the particular valve being closed, said means cut ting of? the supply of air when the valve is open.

10. In reversing valves for open hearth and other type regenerative furnaces, the combination with the valve chamber, regenerative clrnnbers, stack and lines from the regenerative chambers to the valve chamber, of valves torproviding communication beseen the stack and the alternate regeneraber communicating fines, means for admit-ting air to alternate tines upon the particular valve being closed, and adjustable means for varying the volume oi? the air admitted prior to its admission to the valves.

11. In revel-sing valves for open hearth and other type regenerative furnaces, the combination with the ViLlVGCllilDlbQI', regenerative chambers, stack and lines from the regenerative chambers to the valve chamber, of valves for providing communication between the stack and the alternate regenerative chamber communicating tines, means for adn'iitting air through the valves to each of the fines upon the particular valve being closed, said means cutting oil the supply of air when the valve is open.

12. In reversing valves for open hearth combination with the valve chambers andthe regenerative chamber fines, of means for admitting air to alternate flues through the reversing valves, said supply of air being automatically cut off upon the opening of the valves.

14-. In reversing valves for open hearth and other type regenerative furnaces, the

combination with the valve chambers and volume of air so admitted, said regulating means moved into the inoperative and operative positions respectively on the opening and. closing of the valves. I

16. In reversing valves for open hearth and other type regenerative furnaces the combination with the regenerator, of a plu rality of valves, each comprising a seat, a hollow valve body having an a1r outlet and means for conducting the entire volume of air through the hollow valve body to the regenerator.

17. ln'reversing valves for open hearth and other type'regenerative furnaces the con'ibinatron with the regenerator, 01 a plurality of valves, each comprising a seat, a

hollow valve body having a rearwardly facing air outlet. and means for conducting the entire volume of air into the hollow valve body to the regenerator.

18. In reversing valves for open hearth and other type regenerative furnaces, a plurality of valves, each comprising a seat, a hollow valve body having a rearwardly tacing air outlet. means for conducting air into the hollow valve body and means for cutting off the air supply upon the valve body being oil its seat.

19. In reversing valves for open hearth and other type regenerative furnaces, a plurality of valves, each comprising a seat, a hollow valve body having a rearwardly facing air outlet, means for conducting air into the hollow valve body, means for cutting off the air supply upon thevalve body being off its seat and means for regulating the volume of air admitted to the valve body.

'20. In reversing valves for open hearth and other type regenerative furnaces, a plurality of valves, each comprising a seat, a

.hollow' valve body having a rearwardly facing air outlet, means for conducting'air into the hollow valve body. means for cutting of? the air supply upon the valve body being off its seat and means for regulating the volume'of air admitted to the valve body, said regulating means thrown into the tunetioning position upon the valve being seated.

21. In reversing valves for open hearth and other type regenerative furnaces the combination with the rcgenerator, of a plurality of valves, each comprising a seat, a hollow valve body having an air outlet, means for conductingthe entire volume of air through the hollow valve bony to the regenerator and means for watercooling the valve sea 1 22. In reversing valves for open h arth and other type regcnerative iu laces, plurality of valves, each comprising a seat, a hollow valve body having an air outlet, means for conducting air through the hollow valve body, means for water-cooling the valve seat and means for introducing the cooling water into the hollow valve seat through the valve body.

2. In reversing alves for open hearth and other type regenerative furnaces, opposedly operable valves, each comprising a hollow water-cooled seat-portion constituting a partition having an orifice there through, a valve compartment, a hollow valve supporting shaitt extending longitudinally through the valve chambers, said valve supporting shalt communicating with the hollow seat portion, means for circulating water through the hollow shall and seat."

a valve body slidabie ,ou the hollow shaft and means for operal ing the valve body into its open a o closed positions.

24:. In rcv-rsiug valves for open hearth and other type regenerative i'urnaccs, opposedly operable vabxcs, each comprising a valve seat constituting a partition having an orifice therethrough, a valve receiving compartment. an air chamber communicat- .ig with the valve receiving compartment,

a. valve supporting shaft extending longitudinally oi the valve compartment and a ll chamber, a hollow valve body having a rearwardly extending tubular portion and slid able on the shaft, said valve body having an air outlet aperture therein. means for operating the valve body into the open and closed positions, said tubular portion cutting oil the admission of air from the air chamber to the valve receiving compartment upon the valve being moved off its seat.

'25. In reversing valves for open hearth and other type regenerative furnaces, opposedly operable valves, each comprising a valve seat constituting a partition having an orifice therethrough. a valve receiving compartment, an air chamber communicating with the valve receiving compartment, a valve supporting shalt extending longitudinally of the valve compartment and air chamber, a

hollow valve body having a rearwardly extending tubular portion and slidable on the shaft, said valve body having air outlet apertures therein, means for operating the valve body into the open and closed positions. said tubular portion cutting of the admission oil air from the air chamber to the valve receiving compartment upon the valve being moved off its seat and means for regulating the volume of air admi ted through the tubular portion and valve body to the valve receiving compartment.

536. in reversing valves tor open hearth and other type regenerative furnaces, op posedly operable valves, each comprising a valve seat constituting a partition having an orifice therethrough a valve receiving compartment, an air chamber communicating;- with the valve receiving compartment, a valve supporting; shaft ext-ending longitudinally 0:? the valve compartment and air chamber, a hollow valve body having a rear- Wardly extending;- tubular portion and slidable on the shaft, said valve body having air outlet apertures therein, means tor operating the valve body into the open and closed positions, said tubular portion cutting oil the admission of air from the air chamber to the valve receiving compartment upon the valve being moved off its seat, a plurality of suitably spaced apart air regulating: cones slidably mounted with respect to the valve shaft, the forward cone having a central aperture the "ethrough and means tor operating the cones into the functioning: position sin'uiltaueously with the closing of each valve.

27. In reversing valves for open hearth and other type regenerative "furnaces, 0pposedly operable valves, each comprising a valve seat constituting a partition having an orifice therethrough, a valve receiving compartment, an air chamber communicating with the valve receivingcompartment, a valve su porting" shaft extending longitudinally of the valve compartment and air chamber, hollov valve body having a rear ting oii' the admission of air from the a r chan'iber to the valve receiving; conu artment upon the valve being moved off its seat, a plurality of suitably spaced apart air regulating cones slidably mounted with respect to the valve shaft, the Forward cone having a central aperture therethrough and means for operating the cones into the tunetioniny; position simultaneously With the closing of each valve. the tubular portion of the valve her y moving the cones into their non-functioning position on the opening of the valves.

28. In reversing valves for open hearth and other type regenerative furnaces, opposedly operable valves, each comprising a valve seat constituting a partition having an orifice therethrough, a valve receiving compartment, an air chamber communicating With the valve receiving compartment, 21 valve supportingshaft extending longitudinally of the valve compartment and air chamber, a hollow valve body having a rear- Wardly extend" 1' tubular portion and slid able on the sha'itt, said valve body having air outlet apertures therein, fluid pressure means "for operating the valve body into the open and closed positions, said tubular portion cutting off the admission o't air from the air chamber to the valve receiving compartment upon the valve being moved oil its seat, a plurality of suitably spaced apart air regulating cones slidably i'uouuted with respect to the valve shaft. the forward cone having" a central aperture theretl'iroug'h and fluid pressure means for operating the cones into the functioning position simultaneously with the closing of each valve, the tubular portion of the valve body moving" the cones into their non-functioning position on the opening of the valves.

WILLIAM HENRY WlZ-l'i3TON. 

